Berkshire has purchased shares higher than today's prices. That alone should should give some comfort. While I don't presently own shares, I sell naked OTM puts month in, month out for the premium and have made a tidy sum. It's not easy to find a Buffett holding that's selling for less than they've paid for some of their shares, making this a no brainer for shorting puts. At least you know there is support for the stock. They'll be all over it if this drops a dollar or so. They already own 15%+ of the company.
"I sell naked OTM puts month in, month out for the premium and have made a tidy sum".
I was selling puts monthly but recently the premiums have dropped so I'm only short some leaps. I also own a small position in one of my IRAs. There's a very good chance that Berkshire takes this company over in the next few years or they let them buy back their own shares until BRK effectively owns the company as they did with Geico.